Verification Of Safe Isolation From Supply; Voltage Indicators - Siemens 8DJH Installation And Operating Instructions Manual
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9.8 Verification of safe isolation from supply
9.8.1 Voltage indicators
500-8384.9 • Version 11 • Installation and Operating Instructions • 8DJH
4. Insert the operating lever and turn counter-clockwise
as far as it will go.
✓ The position indicator of the earthing switch
shows the OPEN position.
5. Remove the operating lever.
✓ The locking device returns to its initial position.
6. Fit the padlock (optional) on the locking device at
the desired position [▶ Page 137, "Mechanical
interlocking with padlock"].
✓ The three-position disconnector is in OPEN position.
Mortal danger due to live parts
Ensure safe isolation from supply without any doubt. Touching live parts leads to electric
shock.
⇨ Possible sources of failure:
- Defective voltage indicator (or device for function testing of the coupling section)
- Maloperation of the voltage indicator (or device for function testing of the coupling
section)
⇨ Test the perfect function of the voltage indicator and the coupling section in accordance
with national standards:
- On a live panel
- With a test unit according to IEC 61243‑5/EN 61243‑5
- On all phases
⇨ Use only voltage indicators or devices according to EN 61243‑5/IEC 61243‑5/
VDE 0682‑415 to test the function of the coupling section. The interface conditions
have not changed as against the old standard VDE 0681 Part 7; the corresponding
indicators can still be used.
⇨ Perform repeat test of interface conditions at the capacitive interfaces, as well as on the
indicators according to the customer's specifications or national standards.
⇨ Do not use short‑circuiting jumpers as separate plugs. The function of the surge arrester
installed is not ensured if short‑circuiting jumpers are used.
Functional failure due to humidity
Humidity can impair the function of the voltage indicator.
⇨ In case of rain or fog, do not use the voltage indicator outdoors.
⇨ Dry a humid voltage indicator before use.
Functional failure due to incorrect use
Incorrect use can impair the function of the voltage indicator.
⇨ Always use the voltage indicator in accordance with the permissible rated voltage and
rated frequency.
⇨ Do not damage the voltage indicator.
0000
0000
DANGER
NOTICE
NOTICE
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